Floor-surfacing machine.



N0.a95,497. I PATBNTBD AUG.11,'1908.

c. r. PLISKB. FLOOR SURFACING- MACHINE.

APPLICATION FILED SEPT. l2, 1907. I

2 SHEETS-SHEET 2.

nim. e.l F. l Prussia, 0F CLEVELAND, oisio.

vno'oalsmtsacme Meermin.

Specification of Letters Patent.

.Patented Aug. 11, 190s.

Appllcntion'led September 12,1901.. Serial No. 892,518.

To all whom 'ii'fmay concern:

Be it known that I, EMIL C. F. PLIsKE,

citizeii of the United States, residing at.

Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Floor-Surfacing Mapliines, of .which the following is a specificaion.-

This invention relates to floor sm'facing machines, particularly adapted for planing down and polishing wood floors, but also adapted for use for sanding, finding or 'pole ishing plane surfaces generally.

The machine is operated by a motor and is adapted to travel over the'suiface to be treated, and is provided witha cutter and Sanders, for lwhich other implements may be substituted, such as a planer or polisher.

The invention is illustrated in the accompanying drawing in which,

Figure 1 is a side elevation of the machine. Fig. .2 is a top plan view. Fig. 3 is a perspective view o the exhaust apjliances for removing the chips and dust. ig. 4 is a perspective view of a planer head. Fi 5 is a perspective view of a cutter head. Pig. 6 is a perspective of a modification in Whicha swinging supporting bracket for the cutter is provide( instead of the fixed supports shown in Figs. 1 and 2.

Referring specifically to the drawings, 1 indicates the rectangular main frame of the machine. This has at the front a. curved frame 2, which extends around and forms a casing or boxing for the cutter. Mounted upon this frame 2 is a standard 3 which su ports the vertical shaft 50 on which tic rotary cutter head 5 is mounted. The shaft 50 is mounted to turn in a grooved bearing box 6 which is dove-tailed into the standard 3 as indicated at 6 and said dovetsiled part has s rack which is engaged by a pinion 9 which may be turned to raise or lower the bearing and shaft, and consequently to vary the position of the cutter 5 with respect to the oor. The shaft 50 is provided with a wide pulley 7 for drivin the same, the driving belt bein indicate at 7. At the top the shaft 50 as a pulley 8 which receives s. belt 8 for driving th fan as hereafter described. The to part of the standard 3, that is the part w iieli supports the bearing 6 and which 1s indicated at 3, is adjustably or slidably mounted on top of the standard, and may be raised or lowered by screws 10, which are tapped through said top part and bear against shoulders 3" at the bottom. The depth of the cutis adjusted by means of these screws.

At the front end theframe is mounted upon wheels 13 which are carried upon a.

cross bar 14, the ends of which project be-- yond the frame and receive t e wheels, which ar'e caster wheels so that the frame may turn as,desired. Bolts 15 connect the frame and thecross bar 14 and the nuts thereon may set up or down to adjust the frame with respect to the floor said bolts working loose t rough the bar.

To eifect a quick adjustment which is particularly desirable when a buzz planer as shown in Fig. `4 is used cams 16 are provided which are carried by a shaft 17 mounted upon brackets 17 ontlixe frame. These cams bear on the top of the bar 14 and by turning' the shaft the framemsy be raised or lowered since the bar is siipported b the wheels and the frame is hung frornfthe ar by the bolts. The shaft 17 is rocked bynieans of a connecting rod 17b to a lever 18st one side ofthe ma.- chine. Of course this adjustment is also available when the sanding rolls are used. Said rod 17b is also connected to the rock shaft 9"L which h'as a crank arm 9* connected by a rod 9 to an arm 9d projecting from the pinion 9, and by operation of the said lever the pinion is turned and the shaft 50 raised or lowered.

In Figs. 1 and 2 sanding rolls 19 and 20 are shown. `These have grooves 21 and 22 forx90 attaching or holding the sandpaper with which the surface of the rolls is covered. These rolls are mojjiited at the ends in bearing brackets 23 which are loosely or ivotally connected at 27 to the sides bars of t e frame 1. The brackets 23 are connected to a lever 24 for raising or lowering the same and consequentl for lifting or lowering the sanding roll. he lever is mounted upon a rock-shaft 24 extending across the frame and connected to the brackets 23 at the opposite ends. Said connection is formed by means of springs 26 coiled around rods 26, and springs .are connected underneath between the brackets and the frame to 've a spring tension or pressure of the sanding rolls against the floor, said tension being adjusted or regulated by means of the lever, iii connection with the spirngs 26. The loose or slotted connection at 27 allows the sanding rolls to have an equal bearing on the floor.

The driving motor 29 is mounted upon` the rear of the frame as well as 'a pro eilng motor which drives the gear w 'ch causes the machine to travel. The motor'29 carries *a Sprocket 31 which is belted by a chain 31 to the s rockets 32 on one end of the sanding rolls. he belt travels over the sprocket on the roller 19 and under land. around the sprocket on the roller 20. The motor 30 is connected by belt and pulleys 30 to a shaft 30b which has a'spiral gear 33 meshing with a correspondingl gear 36 on the rear axle 368L which .carries the supporting and. drivinflr wheels 37 and 38. The shaft 30b is niounte in a rockin bearing 34 which may be operated b a ever 35 and"rock shaft 35a to swing t e spiral gear 33 into or out ofengagement with the gear 36. Said ear 36 1ncludes a 'diierential to allow t 1e machine to be turned. Suitable electrical supply connections and controlling devices for the rno tors will be provided.

:Ing operation, the rotation of the'cutter head 5 planes the fioor or the surface `neing treated, and the sanding rolls 19 and 20 smooth and polish the same. The fan 28 is supported by the bracket G on the frame of the machine, and it vhas an outlet pipe A leading to the dust bag D. Also an inlet pipe leading from the-head or funnel C which sets ovbr an opening in the base of the standard 3. The part 2, and the base of the standard, forni a casing or boxing for the cutter, and part of the space between the `frame 2 may be covered by a glass or transparent plate 2 the Sanders a branch through which the o eration of the cutter can be seen. For co lectin the dustfrom pipe extends from the pipe B to the suction box which sets between the rollers 19 and 20, and has inlet o enin s I", so that the dust is drawn in t roug the openings and through the fan to the dust bag, as well as the chips from the cutter. i

In Fig. 4 I show a horizontal rotary planer which ma be substituted for one of the sanding ro ls or located in the frame adjacent `.to said rolls and driven by suitable connections.' This planer includes a frame 60 with ahead 6 1 mounted on a shaft 62 which rotetes in bearings in the frame and has s. driving pulley 63. The planer knives 64 are secured to the sides of the head 61. This sort of a planer is very desirable for varnished or finished iioors, as it cuts or chips upwardly and the varnish is not so apt to take the edge ofi' the knives as with rotary cutters or Scrapers of other kinds. The frame may be set in between the main frame 1, andsltable driving connections provided.

In the modification shown in Fig. 6 instead of a standard 3 a standard 7 0 is provided,

which ma be mounted upon the main frame and Whic supports a vertical shaft 71 on which is also mounted a swinging bracket 72 which carries a bearing 73 for the cutter shaft 74, provided with a suitable cutter head and a pulley, with necessary connecting belts to operate the shaft.

Various other modifications or changes may be made inthearran ement or structure of the machine without eparting from the sco e of the invention. i

1. In a surfacing machine, the combina.-v tion with a frame carrying a surfacing imple-A ment, of a bar extending across the same, wheels under the bar, and a lever mounted in the frame and bearing on the bar, to raise or lower the frame.-

2. In a surfacin machine, the combination with a wheele frame, cfa surfacing roll located within the same, bearin brackets for the roll, loosely1 connected to t e frame and supporting the roll at o posite ends thereof, and means to raise and ibwer the brackets to put the roll in or out of action.

3. In a surfacing machine, the combination with a traveling frame, of a surfacing roll, and supports for the roll having a s ring connection to the frame, providing a yie ding pressure of the roll on the surface. being worked. 4. In a surfacing machine, the conibination with a traveling frame, of a surfacing roll, supporting bracket-s ivoted on the frame for the roll at opposite ends thereof, sprin s connected between the brackets and tne rame and tending to press the roll against the surface being worked, and a lifting lever having spring connections to the brackets.

5. In a surfacing machine, the combination with a traveling frame, of a pair of surfacing rolls, brackets supporting the same and having a movable pivotal connection to the frame, whereby both rolls adjust them. selves to the surface being worked, and means connected to the brackets to raise and lower the rolls.

6. In a surfacin machine, the combination of a wheeled granie, a pair of surfacing rolls extending horizontally across the frame, a suction box extending across between the rolls, a fan and dust outlet connected to the suction box, and means to operate the rolls and the fan.

In testimony whereof I affix my signature, in presence of two witnesses.

yEMIL C. F. PLISKE. Witnesses:

JOHN A. Bomrnxnn'r, EDITH D. COMER. 

